Massaging system seat cushion



FIG. 1 is a perspective view of a cushion showing my new design;

FIG. 2 is a view of the front of the cushion;

FIG. 3 is a view of the back of the cushion;

FIG. 4 is a view of one side of the cushion; and,

FIG. 5 is a top end view of the cushion. 

The ornamental design for a massaging system seat cushion, as shown and described. 